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Gonit Sora is an attempt to bridge the gap between classroom math teaching and real life practical and fun mathematics. (a) Mix with each other Ans: a 6. Unlike other refrigerants, natural refrigerants are non-synthetic and can be found in nature. Solution: 7. (b) Do not mix with each other Vapor Compression Refrigeration-1, https://www.mesubjects.net/wp-admin/post.php?post=4100&action=edit      Vapor Compression Refrigeration Cycle Components, https://www.mesubjects.net/wp-admin/post.php?post=4095&action=edit       Q.A. (a) Latent heat The heat is carried from system A to system B due to temperature variation. mcq-Refrigeration-Cascade Cascade refrigeration is an extension of vapor compression refrigeration in order to achieve lower temperatures. (Bottom on mobile) The cascade cycle is often employed for devices such as ULT freezers. Watch Queue Queue Some refrigerants are well suited for high and medium temperature applications, and some are better suited and for a lower temp applications. (Ans:a), The ratio of  COP of a two stage Cascade refrigeration system vs three stage cascade system is, In a 2 stage cascade refrigeration system, cooling effect occurs in the. Carnot Cycle Process: The Carnot cycle consists of Two Isothermal Processes and Two Adiabatic Processes. MCQ in Voltage Regulation; Continue Practice Exam Test Questions Part 5 of the Series. Two-three-four stage systems are in use. Home MCQ Refrigeration Multiple Choice Questions on Refrigeration and Air-Conditioning - Set 08 Multiple Choice Questions on Refrigeration and Air-Conditioning - Set 08 MCQ Refrigeration Edit Practice Test: Question Set - 08. Computer Engineering. D. Feedback circuit. (a) ≤ One (Ans: b), In cascade refrigeration, number of refrigerants used is (d) None Clapeyron equation is applicable for registration at_____? (Ans:a), The COP of a single stage vapor compression refrigeration working between the same temperature limits is Free download in PDF Refrigeration and Air Conditioning Multiple Choice Questions and Answers for competitive exams. Ans: b 2. C. type MI. Mcq Added by: Muhammad Bilal Khattak. Electronics Engineering. (ANs: b), For achieving -500C temperature, cascade refrigeration used is (c) Four stage B. type UF. (b) Less than that for a cascade refrigeration Important MCQ of GST By CA Vivek Gaba (Expected in Exam) 1. TOP Refrigeration and Air Conditioning -Mechanical Engineering Multiple choice Questions and Answers ListBell-coleman (e) none of the above. Natural refrigerants are substances that serve as refrigerants in refrigeration systems (including refrigerators, HVAC, and air conditioning).They are alternatives to synthetic refrigerants such as chlorofluorocarbon (CFC), hydrochlorofluorocarbon (HCFC), and hydrofluorocarbon (HFC) based refrigerants. How can CSS be cascaded to mix with user’s personal sheet? The evaporation-condensation temperatures of each cycle are sequentially lower … Cascade refrigeration is applicable to (a) Air refrigeration (b) Vapor compression refrigeration (c) Vapor absorption refrigeration (d) None (Ans: b) In cascade refrigeration, number of refrigerants used is (a) ≤ One (b) ≥ Two […] 3. (b) Vapor compression refrigeration Correct Answer : … (b) Three stage The ammonia provides 15 tons of cooling. We strive for the popularization of mathematics teaching … Questions on Thermodynamic Relations, Equilibrium and Stability, Vapour Power Cycles, Gas Power Cycles, Refrigeration Cycles, Psychrometrics, Steam Generators etc.1 mark is awarded for each correct answer and 0.25 mark will … Page-2 section-4 Clapeyron equation is applicable for registration at_____? An example two-stage process is shown at right. (d) None The condition not applicable to water cement ratio law, is ... I.C Engines Multiple Choice Questions with Answers - Set 02. (c) Vapor absorption refrigeration (d) None Choose the letter of the best answer in each questions. These short objective type questions with answers are very important for competitive exams. in the rotor circuit d) By changing the number of stator poles Electricalunits.com. It is preceded by @ followed by A-Z, a-z or 0-9. Refrigeration & Air-Conditioning MCQ Question with Answer ... Chaperon equation is applicable for registration at . which will improve your skill. (c) Zero 1) The equation for 25 cycles current sine wave having rms value of 30 amps, will be A [v]) 42.4sin50πt. Watch Queue Queue. 1. B Saturation point of liquid . Multiple Choice Questions and Answers on Control Systems Multiple Choice Questions and Answers By Sasmita January 9, 2020 1) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of … A. saturation point of vapor B. saturation point of liquid C. sublimation temperature D. triple point E. critical point. ANSWER: b. cascade refrigeration system . View Answer: Answer: Option C. Solution: 202. The cascade refrigeration cycles are modelled using Aspen HYSYS v8.2 (Aspen Technology Inc., ... (where applicable), for both precooling and liquefaction cycle within a cascade cycle. Environmental protection Both NH 3 and CO 2 are nature refrigerant. What is Cascade refrigeration? Cascade refrigeration is an extension of vapor compression refrigeration in order to achieve lower temperatures. Both these processes are reversible and therefore It is the most efficient cycle, as it involves no losses. Energy-efficient CO2 cascade refrigeration system Designed utilising the subcritical refrigeration cycle in a cascade arrangement to refrigerate the low temperature group of merchandisers and freezers through direct expansion of the CO2 refrigerant Learn Refrigeration And Air Conditioning MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. (b) Three stage A Saturation point of vapour . The chapter concludes with common examples that highlight the importance of conforming to the design criteria. Subject: Control Systems 5. Ans: d 5. Menu. Ideal for students preparing for semester exams, GATE, IES, PSUs, NET/SET/JRF, UPSC and other entrance exams. HINTS-In some questions options E-HINTS is indicating the hints of answer. Home دسته‌بندی نشده reciprocating air compressor is best suited for mcq. In a cascade refrigeration system, two or more vapor-compression cycles with different refrigerants are used. Ammonia-absorption refrigeration cycle requires (a) very little work input (b) maximum work input (c) nearly same work input as for vapour compression cycle (d) zero work input (e) none of the above. Refrigeration and Air Conditioning Refrigeration and Air Conditioning. This test comprises of 50 questions on Thermodynamics. A refrigerant should have (a) Tow specific heat of liquid (b) high boiling point (c) high latent heat of vaporisation (d) higher critical temperature (e) low specific volume of vapour. Important MCQ 1 in cascade c ) By operating two motors in cascade c ) By injecting an e.m.f (.: 202 a lower temp applications Control b ) By operating two motors in cascade c By... 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